Just minutes ago, via the NASA TV stream, we learned that the SpaceX Dragon spacecraft has successfully been attached to the International Space Station--the very first private spacecraft to do so. (Read more about its launch earlier this week here.) NASA is still broadcasting footage of the attachment, but everything looks smooth so far. Watch it live here.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.